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otww posted:

Thanks for the response but I need to know the best way to install a tvs inside a modern loco with a circuit board.  I have a tvs installed across the all posts  on my ZW but have still managed to fry two circuit boards.  Need to install the tvs within the engine.

You might want to consider something like the PSX-AC if you have already lost 2 boards with TVS' installed.

My most recent problem involves a Williams GP-38.  The rear pickup has become non functional, as its not picking up any power.  The pickup is connected by a red and black wire and two others to a plug which fits into a socket on the circuit or reverse board.  I don't recall a specific instance of a short but I assume one occured and screwed up the board.  If a tvs had been installed between the red and black wire from the pickup, would that have helped.  Most of my more modern locos son't seem to have an easy way to connect a tvs from the center rail pickup roller to the frame other than maybe through  a light socket clip. All connections seem to go through a plug-in socket on the circuit board. 

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OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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